How to use the triggers for compute field in odoo?

Question

Hi
I need a trigger value,
cost_store_triggers = {'product.product':(_get_replace_cost, ['cost'], 5)}
In that case I need a recomputed value for all related (parent and child product cost) product cost so I used this trigger, but it's not working.
Cost = fields. Float (string='Cost', compute=_get_replace_cost, store=cost_store_triggers)

Akhil P Sivan · Answer

Hi,
This link might be useful:
http://stackoverflow.com/questions/29537608/how-to-set-store-trigger-for-computed-fields-in-odoo-8 [1]

[1] http://stackoverflow.com/questions/29537608/how-to-set-store-trigger-for-computed-fields-in-odoo-8

Baiju KS · Answer

Hi,
you can use *@api.depends()* for this : specify the field dependencies; those dependencies are used to determine when to recompute the field; recomputation is automatic and guarantees cache/database consistency. Note that the same method can be used for several fields, you simply have to assign all the given fields in the method; the method will be invoked once for all those fields.
@api.depends('field1', 'field2')
Hope this helps.

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